Pangram
FreemiumAI content detector for identifying AI-generated text
Quick Verdict
Educators, publishers, and content moderators verifying text authenticity
High-volume scanning without a budget, or non-text content
Free (2,000 words/day) · Individual $20/mo · Professional $65/mo
Yes (2,000 words/day)
Segment-level highlighting
Credit-based pricing adds up fast
Bottom line: Pangram scores 4.5/5 -- a solid AI detection tool with segment-level analysis and strong accuracy claims. Best suited for educators and content moderators who need granular AI text identification.
Why this score (ToolChase Editorial Score): scored on accuracy, price, features, and independent research. The 4.5 reflects independent University of Chicago testing (BFI WP 2025-116, Aug 2025) where Pangram was the only detector to meet a stringent false-positive cap (FPR ≤ 0.005) while staying robust to humanizer tools -- held below 5.0 by a limited free tier (2,000 words/day) and premium pricing. Featured in: Best AI Detectors 2026.
Pangram demo video
Watch Pangram Labs's official demo to see Pangram in action before reading our full review.
Official video by Pangram Labs via YouTube, embedded for reference. ToolChase does not host or claim this video.
What is Pangram?
Pangram is an AI content detection platform built by Pangram Labs that identifies text generated by large language models including ChatGPT, Claude, Gemini, Llama, and others. The company claims 99.98% accuracy on its classifier, which uses a transformer-based neural network trained specifically to distinguish AI-written text from human-written text. The tool has been peer-reviewed, with a technical report published on arXiv detailing its methodology.
What sets Pangram apart from simpler AI detectors is its sliding-window analysis. Rather than returning a single percentage score for an entire document, Pangram highlights individual segments with their AI likelihood, showing exactly which sentences and paragraphs triggered detection. This makes it particularly useful for educators who need to identify which parts of a student submission may have been AI-assisted versus fully human-written. The platform also includes AI assistance detection, which can flag text that was partially edited or refined by AI rather than fully generated.
Pangram supports over 20 languages and is available as a web dashboard, Chrome extension, Google Docs integration, and developer API. For institutions, Pangram offers LMS integrations with platforms like Canvas, enabling automatic scanning of student submissions. The paid tiers add plagiarism detection that checks for copy-paste plagiarism and reused submissions from prior years. The free plan provides 2,000 words per day, while the Individual plan ($20/mo) covers up to 300,000 words per month and the Professional plan ($65/mo) covers up to 1,500,000 words per month.
Pangram Pricing
Free -- 2,000 words per day. Includes AI content detection, AI assistance detection, interpretability features, file upload/OCR, 20+ language support, Chrome extension, and Google Docs integration. No payment required.
Individual -- $20/mo (or $15/mo billed annually, saving $60/year) -- scan up to 300,000 words per month plus 100 image detection scans monthly. Everything in Free plus plagiarism detection and automatic social media scanning.
Professional -- $65/mo (or $45/mo billed annually, saving $240/year) -- scan up to 1,500,000 words per month, 500 image detection scans monthly, and $200 in monthly API usage. Everything in Individual with higher volume for agencies, publishers, and power users.
Team -- $20 per seat/month (minimum 2 seats) -- 300,000 words per month.
Developer API -- priced by model: Pangram 4 is $0.05 per 100 words, Pangram 3 is $0.05 per 1,000 words. Purchase credit packs from $25 (500 credits) up to $1,000. API credits are separate from dashboard subscriptions.
Institutional License -- Custom pricing for schools, districts, and universities. Includes unlimited checks, LMS integration, plagiarism detection, usage analytics, and a commitment not to train on student data.
Key Features
- Sliding-window AI detection -- highlights individual sentences and paragraphs with their AI likelihood rather than giving a single document-wide score
- AI assistance detection -- identifies text that was partially edited or refined by AI, not just fully AI-generated content
- 20+ language support -- detects AI-generated text across more than 20 languages including English, Spanish, French, German, Chinese, and more
- Plagiarism detection -- checks for copy-paste plagiarism and reused submissions from prior years (paid plans only)
- LMS integration -- integrates with Canvas and other learning management systems for automatic scanning of student submissions
- Chrome extension -- scan any webpage or text field directly from your browser without copying and pasting
- Google Docs integration -- run AI detection directly within Google Docs for seamless workflow
- File upload & OCR -- upload PDFs, Word documents, and images with OCR for handwritten or scanned text analysis
- Developer API -- programmatic access priced by model, $0.05 per 100 words on Pangram 4 and $0.05 per 1,000 words on Pangram 3, for building AI detection into your own applications
- Interpretability features -- explains why text was flagged as AI-generated, providing transparency into the detection model's reasoning
Pros & Cons
Pros
- Segment-level highlighting shows exactly which parts of text are AI-generated, not just a single score
- AI assistance detection catches partially AI-edited text that other detectors miss
- Free tier available with 2,000 words per day and no credit card required
- Supports 20+ languages for multilingual detection needs
- LMS integrations make it practical for institutional deployment at scale
- Peer-reviewed methodology published on arXiv adds scientific credibility
- Developer API enables custom integrations at reasonable per-word pricing
Cons
- Word-quota pricing means costs scale quickly for high-volume users
- Free plan capped at 2,000 words per day, which limits heavy checking
- No AI detection tool is truly 100% accurate -- false positives and negatives remain possible
- Plagiarism detection only available on paid plans
- Relatively newer entrant compared to established players like Turnitin or Copyleaks
- API credits are separate from dashboard subscriptions, adding billing complexity
Best For
Educators and academic institutions that need to verify whether student submissions contain AI-generated content, especially those using Canvas or other LMS platforms. Publishers and content moderators who need to screen submitted articles, blog posts, or user-generated content for AI authorship. Content agencies and freelance managers verifying that contracted writing is genuinely human-authored. Developers building AI detection into their own platforms via the API.
Good to know
Sign up for free at pangram.com. Install the Chrome extension or Google Docs add-on for in-browser scanning, or use the web dashboard to paste or upload documents directly.
Pangram states it does not train its models on user-submitted text. Institutional licenses include explicit commitments not to train on student data. SOC 2 compliance available for enterprise accounts.
When you need more than 2,000 words per day or require plagiarism detection. The Individual plan ($20/mo) adds up to 300,000 words per month, 100 image detection scans monthly, and plagiarism scanning.
Very low -- paste text or upload a file and get results in seconds. The segment-level highlighting is intuitive. API integration requires basic developer knowledge.
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FAQ
What is Pangram?
Pangram is an AI content detection tool that identifies text generated by large language models like ChatGPT, Claude, and Gemini. It uses a transformer-based neural network to analyze text at the segment level, highlighting which specific sentences and paragraphs were likely AI-generated. It is available as a web app, Chrome extension, Google Docs add-on, and developer API.
Is Pangram free?
Yes, Pangram offers a free plan with 2,000 words per day. This includes AI detection, AI assistance detection, file upload with OCR, 20+ language support, and access to the Chrome extension and Google Docs integration. Paid plans start at $20/mo for up to 300,000 words per month and add plagiarism detection.
How accurate is Pangram?
Pangram claims 99.98% accuracy on its classifier, and the methodology has been peer-reviewed with a technical report published on arXiv. However, no AI detection tool is perfect -- false positives (flagging human text as AI) and false negatives (missing AI text) can occur, especially with heavily edited or paraphrased AI content. Independent third-party evaluations have generally rated Pangram well among AI detectors.
Pangram vs GPTZero -- which is better?
Both are strong AI detection tools. Pangram's key advantage is segment-level highlighting that shows exactly which parts of text triggered detection, plus AI assistance detection for partially edited content. GPTZero has a larger free tier and broader brand recognition. For educators needing granular analysis, Pangram may be the better choice; for casual checking, GPTZero's free tier is more generous.
Does Pangram work with Canvas and other LMS platforms?
Yes. Pangram offers institutional licenses that integrate directly with Canvas and other learning management systems. Submissions can be automatically scanned for AI content and plagiarism. This requires an institutional license with custom pricing -- contact Pangram for a quote.
Does Pangram detect AI-assisted writing?
Yes. Unlike many AI detectors that only flag fully AI-generated text, Pangram includes an AI assistance detection feature that identifies text that was partially written by a human and then refined, expanded, or edited using AI tools. This is useful for catching subtle AI involvement that full-generation detectors might miss.
Does Pangram train on my submitted text?
Pangram states it does not train its models on user-submitted content. Institutional licenses include an explicit commitment not to use student data for model training. Enterprise accounts can access SOC 2 compliance documentation for additional assurance.
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